stm32 - 了解 CAN 过滤器

Question

我无法理解 stm32f4-discovery 的 CAN 过滤器配置。

CAN_FilterInitStructure.CAN_FilterNumber = 0;
CAN_FilterInitStructure.CAN_FilterMode = CAN_FilterMode_IdMask;
CAN_FilterInitStructure.CAN_FilterScale = CAN_FilterScale_32bit;
CAN_FilterInitStructure.CAN_FilterIdHigh = 0x0000;
CAN_FilterInitStructure.CAN_FilterIdLow = 0x0000;
CAN_FilterInitStructure.CAN_FilterMaskIdHigh = 0x0000;
CAN_FilterInitStructure.CAN_FilterMaskIdLow = 0x0000;
CAN_FilterInitStructure.CAN_FilterFIFOAssignment = 0;
CAN_FilterInitStructure.CAN_FilterActivation = ENABLE;
CAN_FilterInit(&CAN_FilterInitStructure);

有人可以向我解释这是如何工作的吗？还是在任何地方都有记录？我找不到它。

Answer 1

就文档而言：

参考手册，第 32 节 bxCAN

F4 的 Std Peripheral Lib具有 doxygen 文档的编译版本，作为 zip 文件中的 CHM (stm32f4xx_dsp_stdperiph_lib_um.chm)。